Interpretive Summary: Saltcedar is an weedy shrub that was originally established for stream channel stabilization and windbreaks in the middle 1800s. Since that time, it has become a prolific invasive weed species that is difficult to control in riparian systems. In Texas, natural resource managers, government officials, and scientists need effective means for monitoring biological control of saltcedar with the saltcedar leaf beetle. A ground-based study was conducted in West Texas to compare the canopy reflectance characteristics of saltcedar trees exhibiting feeding damage caused by the saltcedar leaf beetle to other cover types. Wavelengths sensitive to changes in leaf pigment concentrations (red wavelength, 630-690 nanometer range) and to reduction in foliage content (near-infrared wavelengths, 770-895, 860-1040 nanometer range) were useful for discriminating severe feeding damage and total defoliation to saltcedar trees, respectively, from other cover types. Wavelengths identified in this study correspond to wavelengths used in commercial airborne and satellite-borne multispectral imaging systems, thus supporting future exploitations of those systems to monitor biological control of saltcedar within complex landscapes.